CMC Multi-Purpose Device

Has anyone had any experience using the CMC Multi-Purpose device (http://www.cmcrescue.com/product.php?dept_id=20660).
-What do you think of them?
-Are there any bad aspects to using the device?
-Do you think this device could replace the tandem prussic belay?
-Could it replace the 540 Belay?

I have had them on order since late January / early Feb and it is still backordered. I was told end of March, end of May - and still nothing. Spoke with a CMC rep at FDIC who said all backorders will be cleared by August.

Anyways, it looks great and operates easily, but I haven't had any real loads on one yet.

The advantages are that your main line and belay line can be identical setups without the need for any Load Releasing Hitches. This can also be done with the Petzl I'd, however for lowering a 2 person load with the Petzl I'd you must add an extra friction point. The MPD is NFPA G rated for lowering just how it is rigged.

The disadvantages are really limited to cost. The expense is there, however it replaces about 400 bucks worth of equipment, and I believe it can save money since training and operations will both be streamlined saving you money and time by making your setup more efficient.

Thanks Guys. We used a demo MPD the other day and ran some scenarios with it. We used it as a lowering device, used it in a 3:1, 5:1, and used it as a belay device. It seemed to work really well for everything we did, I was pretty impressed with it.